Packing cutter



March 29 1927' .G. E. LONG PACKING CUTTER 2 sheets-sheet 1 Filed Oct 5, 1926 March 29, 19 G. 5 LONG .PACKING CUTTER Filed Oct 5, 1926 2 Sheets-Sheet 2 Patented Mar. 29, 1927.

UNITED STATES PATENT OFFICE.

GEORGE E. LONG, OF CHATTANOOGA, TENNESSEE.

PACKIN G CUTTER;

Application filed August- 5, 1326.. .Serial No. 127,389.

readily out without any calculation andanother object is to provide a cutting device of this character which will make either square cuts, that is cutsat right angles to the axis of the packing, or inclined cuts.

My invention is illustrated in the accompanying drawings wherein Figure lis a front elevation of a packing cutter constructed in accordance with my invention;

Fig. 2 is a section on the line 2-2 of Figure 1; r

Fig. 3 is a vertical sectional view through the guideway lookingtowardthe frontof through the the cut-terbody;

Fig, 4 is a fragmentary radial section guideway ,of the body and the stop; 7

Fig. 5 is a face view ofa stop for use in cutting lapped packing;

Fig. 6 is a fragmentary face view ofthe r guideway, showing thev slot for cutting the abutting ends of packing;

Fig. 7 is a like View to Figure 6but showing the inclined slot;

Fig. 8 is a fragmentary top plan view of the knife carrier used with the slot shown in Figure 6;

Fig. 9 is a like view'but showing the form of carrier used with the slot shown in Figure 7 deferring to these drawings it 'wil'l'beseen that my mechanism includes a body which is designated generally 10 which is formed with the hollow base 11"having"fianges 12- whereby the base may be attached to any suitable support. This body-10 is formed of a hollow casting having openings 13' .whereby to make the casting lighter and provided with an annular outwardly projecting portionylihaving at its outer end the annular flange 15 which extends entirely around the body and at right angles to the longitudinal axis thereof.

The front of the body hasa diametrically extending web 16 centrally apertured and screw-threaded for. the support of the pilot PHI-117. The front face of the flange 15 is formed with the annular groove 18, the walls of which are disposed at an angle 90 to each other and outwardof this groove the face of the flange 15is formed with graduations 19. At its upper. end-the flange is provided with a slot 20 which, .in Figure 6,. isshown ,as extending directly downward toward the center of the cylindrical body bedisposcd at anangle of45 to ,the flange 15. Thisslot 20 extends vertically through the flange and thr'ou-ghor into the cylindrical but which may portion 14 of the bQdY- This slot 20 for 7 square cuts is about j gth of an inch wide whereas for lap cuts, that is .where the slot is inclined as in Figure 7 the slot is about 3/32nds of an inch wide.' The bodyhas a circularopeningZl at its rear end, the rear face of the body being inclined upward and forward and the upper end of the body just above the opening 21 is provided with the barrel '22 constituting a .bead.

fiyotall'y mounted upon the head 22 is the knife carrier 23. The rear end of this kni e carrier is forked and embraces. the

barrel orbead 22 and is pivotally engaged therewith :by means ofa'ftransverse pin 24. F 'rward of this forked portion 25 the knife carrier hasa slightly recessed face and disposed in this recessed face is the knife 26 having a beveledcuttin -edge formed with central slot 27 tlirough which a .set screw or cap screw 28' passes, the screw 28' engaging with. the face of the knife carrier" thus permitting the knife to be adjusted vertically to a slight extent and then clamped in its adjusted position. The carrier is provided with a handle 29; Where'the' slot 20 is disposed at right angles'to the flange 15. the knife 26'is, of'course', disposed in a plane paralleltothe handle 29' andatright angles to the pivot pin 24..but-where the. slot' '20 is inclined asin Figure .7 the knife is mounted upon the. carrier at an inclination, as shown m Figure 9, where the knife carry ng face of the handle is disposed. at an inclination to the longitudinal axjs ofthe carrier.

Mounted upon the flange 15*for adjustment around said flange in accordance with the graduations 19 the stop 30. This is forn'ied with a vertical groove 31 adjacent its outer face into which the flange 15 fits and extending through the front wall of this groove 31 is a set screw 32 having a knurled head so that the stop may be ad justed to any desired position around the flange 15 and held in its adjusted position. lVhere the stop is to be used with the knife as shown in Figure 8 with the slot 20 at right angles to the pivot pin of the knife carrier, the stop is formed with a flat face at right angles to the plane of flange 15 but where the device is intended to cut lap joints or, in other words, make cuts at an angle of 5-5", the face 33 of the stop against which the end of the packing strip bears is disposed at an agle of (See Figure 5.)

While I have referred to the slot 20 in Figure 7 and the knife in Figure 9 and the stop in Figure 5 as being set at an angle of 45, it is to be understood that any desired angle might be used. lVhile I do not wish to be limited to the particular graduations 19 illustrated, preferably the face of the packing cutter will be divided by graduations into six equal parts and sub-divided into (Elths of an inch and the barrel 14 of the cutter will have a diameter of six inches. Thus, by dividing the cutter face into six equal parts, and setting the stop at the first division to the right of the slot, or th of the diameter of the cutter, a piece of packing can be cut to exactly the size of a one inch valve stem, piston rod, or the like. The sub-division of the face into 64cths will give any desired size or cut of packin If l/Gth of an inch clearance is desired between the ends of the packing on a one inch rod or valve stem, then the stop may be set at 1/64th less than one inch or it may be set for 1/32nd less or for any clearance desired. The cylindrical or barrel portion 14 and the flange 15 constitute a guideway for the packing and in the use of this device the stop is set at the desired position, the knife raised, and the packing slipped around the barrel 14 until the end of the packing bears against the stop. Then the knife is lowered and cuts off the packing. This cutter will give accurate and identical lengths of packing with parallel ends and the same amount of clearance between the ends of each piece of packing, thus greatly eliminating the blowing and scoring of valve stems and rods.

Preferably the graduation on the face of the cutter starts at the left of the knife slot and would be graduated clockwise. lVhile I do not wish to be limited to this, preferably I have provided a pilot pin 17 which extends out approximately 8 from the member 16 and provided an opening 34 so that a spool of packing may be mounted in the manner of a roller upon the pilot pin 17 and the end of the packing carried out through the opening 34 and thus carried around the barrel or cylindrical portion '14.

I claim V 1. A packing cutter comprising a flanged guideway for the packing and having gradnations, a stop adjustable along the guideway in accordance with said graduations, a knife operating across the guideway, and a spindle upon which a roll of packing may be mounted, the guideway having an aperture through which the packing may extend and be pulled out onto the face of the guideway.

2. A packing cutter comprising a cylindrical guideway for the packing, a knife operating across the guideway, the guideway being provided with graduations, and a stop movable along the guideway toward or from the knife, the cutter being hollow and having a central spindle upon which a roll of packing may be mounted, and the guideway having at one point an aperture through which the packing may extend and by which the packing may be pulled out onto the face of the guideway.

3. A packing cutter comprising a hollow body formed to provide a cylindrical guideway having a flange at one end, the body having a supporting base, a web extending diametrically across the body at its flanged end, the opposite end of the body being open, a spindle engaged with the web and projecting longitudinally through the body and through the open end thereof, a knife carrier mounted upon the body for swinging movement, and a knife carried thereby and operating across the guideway, the flange being slotted to receive said knife.

4. A packing cutter comprising a hollow body formed to provide a cylindrical guideway having a flange at one end, the body having a supporting base, a web extending diametrically across the body at its flanged end, the opposite end of the body being open, a spindle engaged with the web and projecting longitudinally through the body and through the open end thereof, a knife car rier mounted upon the body for swinging movement, a knife carried thereby and operating across the guideway, the flange being slotted to receive said knife, and a stop shiftably mounted upon the flange for. adjustment toward or away from said knife, the face of the body being graduated.

5. A. packing cutter comprising a hollow approximately cylindrical body having a cylindrical guideway at one end and an annular flange extending at right angles to the face of the guideway, the face of said flange being graduated, a web extending diametrically across the flanged end of the body, the opposite end of the body being open, a pilot pin mounted upon the web and extending axially through the body, the

guideway being open at one point to permit stop slidingly mounted upon the flange and the passage of packing from the pilot pin being adjustable around the flange in accordthrough said opening, a. knife carrier pivotanee with said graduations, and means for ally mounted upon the body at its open end, holding the stop in adjusted positions.

a knife mounted upon the carrier and adapt- In testimony whereof I hereunto afiix my ed to operate across the guideway, the flange signature.

being slotted for the passage of the knife, a GEORGE E. LONG. 

